From 7a67b4c28ba8a303dc0ec20bddeaa077df6da165 Mon Sep 17 00:00:00 2001
From: Boey Maun Suang <boeyms@users.noreply.github.com>
Date: Sun, 19 Feb 2023 14:37:11 +1100
Subject: [PATCH] fftwQuad: Fix build on Darwin by forcing gcc

---
 pkgs/top-level/all-packages.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ab1d60a1ad31..a1427aa3483a 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -19618,7 +19618,11 @@ with pkgs;
   fftwSinglePrec = fftw.override { precision = "single"; };
   fftwFloat = fftwSinglePrec; # the configure option is just an alias
   fftwLongDouble = fftw.override { precision = "long-double"; };
-  fftwQuad = fftw.override { precision = "quad-precision"; };
+  # Need gcc >= 4.6.0 to build with FFTW with quad precision, but Darwin defaults to Clang
+  fftwQuad = fftw.override {
+    precision = "quad-precision";
+    stdenv = gccStdenv;
+  };
   fftwMpi = fftw.override { enableMpi = true; };
 
   filter-audio = callPackage ../development/libraries/filter-audio {};